The ABA-51563 from Broadcom is a RF Amplifier with Frequency 3.5 GHz, Gain 20 to 21.5 dB, Gain Flatness 1 to 1.3 dB, Noise Figure 3.7 to 4 dB, Output Power 1.8 dBm. Tags: Surface Mount, Gain Block, Power Amplifier, Driver Amplifier. More details for ABA-51563 can be seen below.